摘要
高速铁路建成后,开通速度有时和设计速度不一致,造成列车通过曲线地段时,旅客乘车舒适性达不到设计标准。本文通过对不同缓和曲线线型进行分析,在确定设计标准的基础上,计算不同曲线半径、运行速度、缓和曲线类型对旅客乘车舒适性的影响。结果表明:(1)加速度时变率相同时,缓和曲线采用三次抛物线时所需缓和曲线长度分别为仅采用半波正弦、一波正弦和五次多项式等情况下的0.625、0.476和0.833倍;(2)欠/过超高、车体横向加速度与缓和曲线线型无关;(3)满足旅客乘坐舒适度要求的运行最大速度区间为245~370 km/h,且曲线半径越小,速度区间减小;(4)三次抛物曲线车体横向加速度时变率在不同曲线半径、运行速度情况下适应性最好,在300 km/h时,舒适度最优。
After the completion of high-speed railway, the actual running speed is less than the design speed, resulting in that passenger comfort can not meet the design standards in the curve section. Based on the analysis of different transition curves and the determination of design standards, the influence of different curve radius, running speed and transition curve types on passenger ride comfort is calculated in the paper. It is concluded that:(1) When the acceleration time-varying rate is the same, the length of the transition curve with cubic parabola is 0.625, 0.476 and 0.833 times of that with half wave sine, one wave sine and quintic polynomial respectively;(2) Under/over-elevation, lateral acceleration of car body has nothing to do with the transition curve;(3) The maximum speed range that meets the passenger comfort requirements is 245~370 km/h, and the smaller the curve radius, the smaller the speed range;(4) The cubic parabolic body lateral acceleration time-varying rate has the best adaptability under different curve radius and running speed, and the comfort is the best at 300 km/h.
作者
邢烨炜
戴龙钦
XING Yewei;DAI Longqin(China Railway Eryuan Engineering Group Co.,Ltd.,Chengdu 610031,China;Nanchang High-speed Railway Maintenance Section,China Railway Nanchang Bureau Group Compang,Nanchang 330100,China)
出处
《高速铁路技术》
2019年第6期8-14,40,共8页
High Speed Railway Technology
关键词
高速铁路
乘车舒适度
理论分析
缓和曲线
high speed railway
ride comfort
theoretical analysis
transition curves
